﻿using System;
using System.Linq;
using System.Web.Mvc;
using System.Web.Security;
using KPIS.GERP.OMVC.Models;
using KPIS.GERP.OMVC.Classes;
using KPIS.GERP.Models;

namespace KPIS.GERP.OMVC.Controllers
{
    public class AccountController : Controller
    {
        public ActionResult LogIn()
        {
            ViewBag.ThisPageIsLogin = "Yes";
            return View();
        }
        
        [HttpPost]
        public ActionResult LogIn(LogOnModel model, string returnUrl)
        {
            ViewBag.ThisPageIsLogin = "Yes";

            if (ModelState.IsValid)
            {
                using (var db = new GERPContext(true))
                {
                    string connectionString = db.Database.Connection.ConnectionString;
                    var infoUser = (from u in db.Users
                                    where u.Code == model.UserName
                                    && u.Password == model.Password 
                                    select u).FirstOrDefault();

                    if (infoUser != null && infoUser.Employee != null)
                    {
                        SsMng ssmng = new SsMng();
                        ssmng.SetLoginSession(
                            infoUser.UserId.ToString()
                            , infoUser.EmpId.ToString()
                            , infoUser.Employee.FullName
                            , infoUser.Employee.WorkingJobSiteId.ToString());

                        if (Url.IsLocalUrl(returnUrl) && returnUrl.Length > 1 && returnUrl.StartsWith("/")
                            && !returnUrl.StartsWith("//") && !returnUrl.StartsWith("/\\"))
                        {
                            return Redirect(returnUrl);
                        }
                        else
                        {
                            return RedirectToAction("Index", "Home");
                        }
                    }
                    else if (infoUser != null && infoUser.Employee == null)
                    {
                        ModelState.AddModelError("", "ไม่มีพนักงานที่เชื่อมโยงกับผู้ใช้นี้");
                    }
                    else
                    {
                        ModelState.AddModelError("", "รหัสผู้ใช้งานหรือรหัสผ่านไม่ถูกต้อง");
                    }
                }
            }

            return View(model);
        }

        // [ValidateAntiForgeryToken]
        public ActionResult LogOff()
        {
            Session.Abandon();
            FormsAuthentication.SignOut();
            new SsMng().Logout();

            return Redirect(Common.EssSelectSystemUrl);
        }

        [Authorize]
        public ActionResult ChangePassword()
        {
            return View();
        }

        [Authorize]
        [HttpPost]
        public ActionResult ChangePassword(ChangePasswordModel model)
        {
            if (ModelState.IsValid)
            {
                // ChangePassword will throw an exception rather
                // than return false in certain failure scenarios.
                bool changePasswordSucceeded;
                try
                {
                    MembershipUser currentUser = Membership.GetUser(User.Identity.Name, true /* userIsOnline */);
                    changePasswordSucceeded = currentUser.ChangePassword(model.OldPassword, model.NewPassword);
                }
                catch (Exception)
                {
                    changePasswordSucceeded = false;
                }

                if (changePasswordSucceeded)
                {
                    return RedirectToAction("ChangePasswordSuccess");
                }
                else
                {
                    ModelState.AddModelError("", "The current password is incorrect or the new password is invalid.");
                }
            }

            // If we got this far, something failed, redisplay form
            return View(model);
        }

        public ActionResult ChangePasswordSuccess()
        {
            return View();
        }
        
        public ActionResult LoginByPass()
        {
            var ssMng = new SsMng();

            ssMng.CopyLoginSessionFromEss(80);

            ssMng.CheckUss();

            return RedirectToAction("Index", "Home");
        }

        [HttpPost]
        public ActionResult Register(RegisterModel model)
        {
            if (ModelState.IsValid)
            {
                // Attempt to register the user
                MembershipCreateStatus createStatus;
                Membership.CreateUser(model.UserName, model.Password, model.Email, null, null, true, null, out createStatus);

                if (createStatus == MembershipCreateStatus.Success)
                {
                    FormsAuthentication.SetAuthCookie(model.UserName, false /* createPersistentCookie */);
                    return RedirectToAction("Index", "Home");
                }
                else
                {
                    ModelState.AddModelError("", ErrorCodeToString(createStatus));
                }
            }

            // If we got this far, something failed, redisplay form
            return View(model);
        }

        public ActionResult Register()
        {
            return View();
        }

        #region Status Codes
        private static string ErrorCodeToString(MembershipCreateStatus createStatus)
        {
            // See http://go.microsoft.com/fwlink/?LinkID=177550 for
            // a full list of status codes.
            switch (createStatus)
            {
                case MembershipCreateStatus.DuplicateUserName:
                    return "User name already exists. Please enter a different user name.";

                case MembershipCreateStatus.DuplicateEmail:
                    return "A user name for that e-mail address already exists. Please enter a different e-mail address.";

                case MembershipCreateStatus.InvalidPassword:
                    return "The password provided is invalid. Please enter a valid password value.";

                case MembershipCreateStatus.InvalidEmail:
                    return "The e-mail address provided is invalid. Please check the value and try again.";

                case MembershipCreateStatus.InvalidAnswer:
                    return "The password retrieval answer provided is invalid. Please check the value and try again.";

                case MembershipCreateStatus.InvalidQuestion:
                    return "The password retrieval question provided is invalid. Please check the value and try again.";

                case MembershipCreateStatus.InvalidUserName:
                    return "The user name provided is invalid. Please check the value and try again.";

                case MembershipCreateStatus.ProviderError:
                    return "The authentication provider returned an error. Please verify your entry and try again. If the problem persists, please contact your system administrator.";

                case MembershipCreateStatus.UserRejected:
                    return "The user creation request has been canceled. Please verify your entry and try again. If the problem persists, please contact your system administrator.";

                default:
                    return "An unknown error occurred. Please verify your entry and try again. If the problem persists, please contact your system administrator.";
            }
        }
        #endregion
    }
}
